New implementation of KM cost to property support the decimal precision at 3 digits (without changing the decimal precision of all prices in Odoo)

hr_expense_usability/pre_install.py

@@ -0,0 +1,18 @@
+# -*- coding: utf-8 -*-
+# © 2017 Akretion (Alexis de Lattre <alexis.delattre@akretion.com>)
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
+
+from odoo import api, SUPERUSER_ID
+
+
+# I can't create decimal precision via hr_expense_data.xml because it's
+# too "late" in the module installation process: in this case,
+# demo data and post_install.py data have a unit_amount truncated at 2 digits
+# That's why I create the decimal precision via a pre_init_hook
+def create_decimal_precision(cr):
+    with api.Environment.manage():
+        env = api.Environment(cr, SUPERUSER_ID, {})
+        env['decimal.precision'].create({
+            'name': 'Expense Unit Price',
+            'digits': 3,
+            })